基于VSCMG的卫星姿态控制仿真系统

Satellite attitude control simulation test bed based on VSCMG

介绍了一种新型卫星姿态控制全物理仿真系统,此仿真系统以长春光机所最新研制的高精度三轴气浮转台为平台,采用变速控制力矩陀螺(VSCMG)为主要控制执行机构,并结合喷气推力机构作为系统的辅助执行机构给控制力矩陀螺进行卸载。此系统应用高精度光纤陀螺、高精度倾角传感器和磁强计等姿态确定器件构成一套完整的姿态控制全物理仿真系统。介绍了整个仿真系统的软硬件构成,并结合传感器和执行机构参数进行建模和误差分析。本仿真系统可以为一般卫星姿态控制,尤其是以VSCMG为主要执行机构的敏捷型小卫星的姿态控制策略和算法提供良好的仿真验证平台。

A new kind of triaxial air bearing test bed based on Variable-Speed Control Moment Gyro （VSCMG） was described for satellite attitude determination and control system simulation. A triaxial air-bearing platform newly developed was used as the test bed and a cluster of four variable speed control moment gyros was constructed in pyramid mounting arrangement as a main actuator in the simulation system. Also the system used the six gas thrusters to assist VSCMGs to avoid singularity. The attitude determination system was introduced, which consists of three fiber optical gyros, a horizon sensor and a magnetometer. The main parameters of all parts were given to illustrate that the platform can be used in the simulation and validation of many algorithms for modern agile small satellite, which can provide reference for other facilities in this research field.